Question

How much time will simple interest be 1/4th of the principal at the rate of 10% per annum.

Answer 1

Let sum be x.

We know S.I.=0.15x=

20

3

x

We know Time=

P×R

100×S.I.

=

x×10

100×

20

3

x

=

x×20×10

100×3x

=

2

3

=1

2

1

years =18 ,Months